diff --git a/doc/tutorials/others/images/ldr.png b/doc/tutorials/others/images/ldr.png
index 2e1a188e6b..ac420886fa 100644
Binary files a/doc/tutorials/others/images/ldr.png and b/doc/tutorials/others/images/ldr.png differ
diff --git a/modules/photo/src/hdr_common.cpp b/modules/photo/src/hdr_common.cpp
index 5e4bea9d85..83e1686c38 100644
--- a/modules/photo/src/hdr_common.cpp
+++ b/modules/photo/src/hdr_common.cpp
@@ -65,10 +65,15 @@ Mat triangleWeights()
     Mat w(LDR_SIZE, 1, CV_32F);
     int half   = LDR_SIZE / 2;
     int maxVal = LDR_SIZE - 1;
-    for (int i = 0; i < LDR_SIZE; i++)
-        w.at<float>(i) = (i < half)
+    float epsilon = 1e-6f;
+    for (int i = 0; i < LDR_SIZE; i++){
+        float val = (i < half)
             ? static_cast<float>(i)
             : static_cast<float>(maxVal - i);
+        if (val < epsilon)
+            val = epsilon;
+        w.at<float>(i) = val;
+    }
     return w;
 }
 
diff --git a/modules/photo/src/tonemap.cpp b/modules/photo/src/tonemap.cpp
index 0c9275040b..da6c1389c0 100644
--- a/modules/photo/src/tonemap.cpp
+++ b/modules/photo/src/tonemap.cpp
@@ -65,6 +65,7 @@ public:
         CV_INSTRUMENT_REGION();
 
         Mat src = _src.getMat();
+        max(src, Scalar::all(1e-6), src);
         CV_Assert(!src.empty());
         CV_Assert(_src.dims() == 2 && _src.type() == CV_32FC3);
         _dst.create(src.size(), CV_32FC3);
diff --git a/samples/python/tutorial_code/photo/hdr_imaging/hdr_imaging.py b/samples/python/tutorial_code/photo/hdr_imaging/hdr_imaging.py
index a5403d3cca..6ab7cf1a0a 100644
--- a/samples/python/tutorial_code/photo/hdr_imaging/hdr_imaging.py
+++ b/samples/python/tutorial_code/photo/hdr_imaging/hdr_imaging.py
@@ -40,7 +40,7 @@ hdr = merge_debevec.process(images, times, response)
 ## [Make HDR image]
 
 ## [Tonemap HDR image]
-tonemap = cv.createTonemap(2.2)
+tonemap = cv.createTonemapDrago(2.2)
 ldr = tonemap.process(hdr)
 ## [Tonemap HDR image]